Tuesday, July27, 2021
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Marine Weather and Tides
St. James, NC

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:18AMSunset 8:18PM Tuesday July 27, 2021 12:40 AM EDT (04:40 UTC) Moonrise 9:59PMMoonset 8:54AM Illumination 92% Phase: Waning Gibbous; Moon at 18 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ252 Coastal Waters From Cape Fear Nc To Little River Inlet Sc Out 20 Nm- 1036 Pm Edt Mon Jul 26 2021
Overnight..S winds 10 to 15 kt. Seas 3 ft. A slight chance of showers and tstms late this evening, then a chance of showers and tstms.
Tue..SW winds 5 to 10 kt. Seas 3 ft. A chance of showers and tstms.
Tue night..S winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Wed..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Wed night..S winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening.
Thu..W winds 5 kt, becoming S in the afternoon. Seas 2 to 3 ft.
Thu night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft.
Fri..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms through the night.
Sat..SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of tstms through the day. A chance of showers. Winds and seas higher in and near tstms.
AMZ200 1036 Pm Edt Mon Jul 26 2021
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Weak tropical low will move into georgia through tonight. Bermuda high pressure and the approach of a front will maintain southerly winds with increasing showers and Thunderstorms Tuesday into Wednesday.


7 Day Forecast for Marine Location Near St. James, NC
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location: 33.87, -78.16     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 270016 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 816 PM EDT Mon Jul 26 2021

SYNOPSIS. Shower and thunderstorm chances will increase tonight and remain elevated through Wednesday ahead of a front. Dry weather briefly returns Thursday before rain chances increase for the end of the week and start of next week.

UPDATE. Showers and thunderstorms over central Carolinas were slowly moving E-SE and weakening while the cloud debris shield spread into the local forecast area, mainly west of I-95. Expect these mid to high clouds to continue to spread eastward, but limited if any pcp into area possible by 03-04z. Other showers will spread from the waters over coastal areas overnight into early morning and should see some fog around again, especially over the Pee Dee region.

Minor coastal flooding still forecast for Cape Fear in the vicinity of downtown Wilmington within a couple of hours surrounding high tide tonight which will occur right near 1 am.

NEAR TERM /THROUGH TUESDAY NIGHT/. Isolated showers continue to push slowly inland this afternoon. The area remains moderately unstable and will support these showers until just past sunset. Upstream activity moving into the NC piedmont early this afternoon is associated with a weak mid-level shortwave, and may reach areas west of I-95 between closer to 03Z. It appears this line of convection will be weakening with the loss of heating.

For the overnight hours, will maintain chance PoPs for showers or a possible tstm that advect northward off the ocean and may impact coastal counties. Similar to last night, inland locations will likely see patchy, dense fog develop after midnight, as dewpoints have surged into the mid 70s.

Tuesday appears to be shaping up much like today, although areal coverage of showers/tstms should be a little greater than today. This would be the result of increasing 1000-500 mb mean RH, which will be encroaching on the area from the north, ahead of a dissipating front, as well as from the south in the circulation around the SE GA surface low. Expect chance for morning convection to be highest near the coast, slowly transitioning inland through the afternoon. Shower/tstm activity should become more organized to the west of the forecast area during the day, closer to the dissipating frontal boundary. A shortwave is expected to shove this activity eastward to the coast overnight Tuesday night.

Plan on raising a Coastal Flood Advisory for the lower Cape Fear River for the overnight high tide, which will occur at downtown ILM around 12:45 AM. Along the coast zones, it appears we will remain below minor flooding thresholds.

SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/. Mid-level trough axis over much of the East Coast Wed morning will shift offshore during the day. This will setup an extended period of northwest flow aloft. Troughing aloft will persist through Thu night, but the flow will result in deep dry air spreading over the area for Thu. Deep moisture and surface trough/low combo Wed morning will keep elevated chance for showers and thunderstorms into midday before drier air aloft starts spreading in from the northwest. Thu looks dry with environment unfavorable and forecast soundings depicting healthy mid-level inversion. Region will be on the southeast periphery of an elongated mid-level ridge, accounting for some of the subsidence. Temperatures near to below climo Wed will jump above climo Thu with potential for triple digit heat in a few locations. Westerly flow will try to keep the sea breeze pinned on Thu, but flow at 900mb is on the light side, under 10 kt. Sea breeze will likely be able to overcome this, but it could take a bit longer to develop and move inland at a slower rate.

LONG TERM /FRIDAY THROUGH MONDAY/. Pattern aloft will consist of broad troughing into next week. The trough is strengthened early next week by strong shortwave moving over the Great Lakes. Trough on Fri pushes a surface boundary into the region which then stalls in the area, keeping weather unsettled. A stronger front is pushed into the region Mon by the next shortwave, giving a boost to rainfall chances. Some discrepancy on whether the second front ends up stalled Mon or pushes off the coast. Something to watch for now.

- Limited rainfall chances Fri with increasing rain chances each day Sat through Mon

- Highs 5-10 degrees above climo Fri drop back near climo Sat-Mon

- Lows above climo Fri night then near climo Sat night on

AVIATION /00Z TUESDAY THROUGH SATURDAY/. Showers and thunderstorms over the central Carolinas will continue to drop slowly southeast and weaken and should only spread clouds into the area, mainly mid clouds affecting FLO or LBT. Also expect some fog to affect terminals with MVFR vsby and possibly lower for FLO. Another round of coastal showers is expected Tues morning with some MVFR ceilings possible. Overall, moisture will continue to increase into Tues ahead of a front that will drop slowly south through the Carolinas Tuesday into Wednesday.

Extended Outlook . Thunderstorm coverage should remain a bit more widespread through Wednesday with potential for MVFR and brief IFR visibility then. VFR expected Thurs and Fri with return of possible MVFR with another front into the weekend.

MARINE. Through Tuesday night: Surface winds will remain generally out of the SSW tonight through Tuesday night, between Bermuda high pressure and the remnant low pressure that is currently making its way into coastal GA. That feature will dissipate, but will be a source of moisture that will contribute to an increase in areal coverage of showers and tstms over the next couple of days.

Wednesday through Saturday: High pressure will remain off the Southeast coast into the weekend with southwest flow the dominant regime. May see a brief period of offshore Thu and Sat mornings, as weak surface boundaries try to move offshore. Weak gradient Wed and Sat will keep southwest flow closer to 10 kt. Thu and Fri gradient tightens with surface boundary approaching. On Thu 10 to 15 kt will be possible with 15 to 20 kt expected Fri. Seas 2 to 3 ft Wed and Thu build to around 4 ft Fri and Fri night before dropping to 3 to 4 ft Sat. Southeast swell will be dominant on Wed before the southerly wind wave becomes more pronounced Thu and then dominant on Fri and Sat.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . Coastal Flood Advisory from 11 PM this evening to 3 AM EDT Tuesday for NCZ107. MARINE . None.

SYNOPSIS . ILM UPDATE . RGZ/CRM NEAR TERM . CRM SHORT TERM . III LONG TERM . III AVIATION . RGZ MARINE . III/CRM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41108 13 mi41 min 82°F3 ft
41024 - Sunset Nearshore (SUN 2) 17 mi33 min SW 14 G 18 82°F 84°F1016.4 hPa
SSBN7 17 mi24 min 84°F3 ft
MBIN7 22 mi41 min SW 5.1 G 8.9 82°F 1014.8 hPa (+0.5)
MBNN7 27 mi41 min SSW 5.1 G 8.9 82°F 1015.2 hPa (+0.8)
WLON7 27 mi71 min 80°F 83°F1015.8 hPa
41038 - ILM2 - 5 miles SE of Wrightsville Beach, NC 30 mi93 min WSW 12 G 12 83°F 83°F1015.8 hPa
41110 - Masonboro Inlet, NC 30 mi34 min 83°F3 ft
JMPN7 - 8658163 - Johnny Mercer Pier, Wrightsville Beach, NC 31 mi71 min SSW 12 G 14 82°F 82°F1015.4 hPa
41013 - Frying Pan Shoals, NC Buoy 36 mi41 min SSW 14 G 16 82°F 1015.7 hPa78°F
41037 - ILM3 - 27 miles SE of Wrightsville Beach, NC 43 mi33 min S 12 G 16 82°F 82°F1015.7 hPa
MROS1 - 8661070 - Springmaid Pier, SC 43 mi71 min 82°F

Wind History for Wrightsville Beach, NC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Brunswick County Airport, NC6 mi46 minSSW 610.00 miPartly Cloudy81°F75°F82%1015.9 hPa

Link to 5 minute data for KSUT

Wind History from SUT (wind in knots)
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Last 24hrS3CalmS3S4S3S3SW4NW3W4N4CalmCalmS4S6S8S8S6SW4S6S4S4S6S5S5
1 day agoCalmCalmCalmN3CalmCalmCalmN3E3NE3SE4SE7SE6SE5E7SE5S6S4S3S3CalmCalmCalmS4
2 days agoCalmCalmCalmCalmCalmCalmN3N3CalmE4NE7
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Tide / Current Tables for Yaupon Beach, North Carolina
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Yaupon Beach
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Tue -- 04:27 AM EDT     -0.04 feet Low Tide
Tue -- 06:20 AM EDT     Sunrise
Tue -- 09:53 AM EDT     Moonset
Tue -- 10:53 AM EDT     4.91 feet High Tide
Tue -- 04:37 PM EDT     0.22 feet Low Tide
Tue -- 08:16 PM EDT     Sunset
Tue -- 10:59 PM EDT     Moonrise
Tue -- 11:18 PM EDT     5.40 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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53.72.20.90.10.10.81.9344.74.94.53.62.41.20.40.30.91.93.14.14.95.4

Tide / Current Tables for Holden Beach, North Carolina
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Holden Beach
Click for Map
Tue -- 04:34 AM EDT     -0.85 feet Low Tide
Tue -- 06:21 AM EDT     Sunrise
Tue -- 09:54 AM EDT     Moonset
Tue -- 10:30 AM EDT     4.46 feet High Tide
Tue -- 04:44 PM EDT     -0.81 feet Low Tide
Tue -- 08:17 PM EDT     Sunset
Tue -- 10:56 PM EDT     4.79 feet High Tide
Tue -- 10:59 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.12.81.30-0.7-0.8-0.11.22.63.74.44.43.82.81.50.2-0.6-0.8-0.20.92.43.74.54.8

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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